Float-control fuel-feeding apparatus



Feb. 20, 1923.

H, C. SUEKERT FLOAT CONTROL FUEL-FEEDING AIIPARATUS l INVENTOR' gnal Filed June 17, 1920 I ATTO NEY l Patented Feb. 20, 1923.

Unir a rer orifice.' y

HAROLD o. sUEKna'r, Yor New YORK, N. Y., `assreNon. 'rOAU'roivrOrivn SUPPLY`v COMPANY, INC., or NEW YORK, N. Y., A CORPORATION orNEW YORK.

FLOAT-CONTROL FUEL-FEEDNG APPARATUS.`

' Application filed .Tune 17, 1920, Serial No., 389,723. Renewed December 27, 1922.

To all whom# may concern:

Be it known that I, HAROLD C. Sunnnn'r, a citizen of the United States, and a resident of the city, county, and State of New York,

have invented certain new and useful Improvements in Float-Control Fuel-Feeding Apparatus. of which the following is' a specification.

My invention relates to a fuel feeding ap- I paratus for feedingv liquid fuel, such as gasoline, from a supply tank of an automotive device, such as an automobile; for example, `to thecarbureter of an internal combustion engine and more particularly to a fuel feedl ing :apparatus controlled by means of a float.

the fuel level is reduced. l/Vith my invention the pump is. controlled in a direct manner by means of simple and readily constructed apparatus.- i

ing a clear understanding ofmy invention, but not for limitation of the invention, the pumping means is mounted to reciprocate and clutch means are app-lied, thereto and. operated by a ioat.

In the accompanying drawing illustrating` said embodiment of the invention Fig. 1 is a vertical sectional view of the apparatus. Fig. 2 is a detail vertical section taken on a line at right angles to Fig. 1 and Fig. 3 is a horizontal sectional detail view taken on line 3 3, Fig, 1. v

The reservoir 10 has a ring 11 secured thereto about its upper end as by means of solder, or the like, to which is fastened la casting 12. The casting 12 has secured thereto the downwardly and upwardly eX- tending aligned cylinders 13 and 14. The cylinder 13 is preferably located within the reservoir 10 and cylinder 14: preferably extends upwardlyy thereabove and has' cooling tins 15. rIhe member 12 is provided with an In the illustrative form shown for affordupwardly extending bOsS i 161y having formed fr: l

therein a passage 17 which is connected with a source of pulsating pressure, as a cylinder of an internal combustion engine,r anda downwardly extending, boss 18 ,provided with a passage 19 distinct from passagel 17 and vserving as a fuel inlet. l, y

A ypiston 2O is provided withV a flange or .skirt 21 land is adapted to reciprocate'upon the boss 16 within the cylinder 14, and `a pump cup 22 is secured'pto piston 2O to reciprocate therewith, by means of connecting rody 23, 23. The boss 18l is received ywithin the flange or skirt 24 o-f the pump cup? 22 and said boss is provided with aflexiblevvasher 25 which bears directly 4against the skirt' 2liA 'of cu p`22l and lis adapted to prevent the lf gasoline or fuel from passing lbackvvardly into the cupf22 from the reservoir uponlthe downward movement of the` reciprocable pumping device including piston 22,' conf'y 1 necting rods 23, 23 andcup 24.v

A check valve may be provided, if

in the inletpassage 19, but same isn not e'ssential, lsince,while with theHconstruc-tion shown 'more or less fuel may 'pass back throughvthey comparatively narrow passage 19 on the upward stroke of the pumpya; c on siderable por-tion thereof will` nevertheless pass out through the opening, ofrelatively great cross section around-the wa Bumpers 26` Iand '27 of cork, Orsimila-r material, are provided yin the top ,part of cylinder .14; vand inthe bottom of cylinder 13 respectively and serve -to vcushion thereciprocable pumping means against violent shocks in each direction. The` large Size of the bumpers made available by the construction described is' a feature of advantage because of the exceptionally long useful'life of the apparatus thereby obtained.

Fuel pumped into cylinder 13is dis-` provided within cap 30 with a valve seat 31v on which'is received a valve 32 secured-by Sher', as will be readily understood; f

means of a spring 33 to the head of piston 20. y

l/Vhen the device is in operation, the valve 32 is off its seat aconsiderablefportion of the time and when the apparatus is not being operated the spring 33 acts to hold the valve 32 down to its seat whereby evaporation is prevented. rIhis is a feature of considerable importance, Lparticularly when an automobile, for example, equipped therewith is left to stand out of use for some time.

Springs `34, 34, which are less powerful than springs 35, 35 opposed thereto, serve as additional bumpers or shock preventing devices,v while said springs 35, 35 exert pressure to hold the reciprocable pumping means downwardly against the actuating pressure exerted upon the underside of piston 20 and to thereby assist in yproducing the reciprocating movement of the pumping mechanism.

As the piston 20 is always subjectto the pulsating pressure applied thereto, means are provided for temporarily rendering the device inactive by directly holding` it against movement when the fuel level in the reservoir has reached a predetermined height. In the form shown, a. rod 36 projects downwardly from the pump cup 22 towhich it is attached and extends into the interior` of the reservoir 10 through an opening inthe bottom of cylinder 13 where it is adapted to be engaged by a plurality of cams 37, 37 having overwe'ighted arms 38, 38; said arms are adapted 'to be engagedand raised by the float 39, thus clamping the rod 36 and hold-.

ing it stationary, or substantially so, until released by the fioat 39 upon the fuel level beingl reduced, resulting float 39." n l Thev fuel outlet is preferably through a syphon, the preferred form comprises opening 40 in 'the tube 41 upon which the float 39 is slidably mounted, the annular passage 42 between the tube v41 and the interior of tube 43, openings 44 into the bore of tube 43 and the said bore 45. A tubel 46 of relatively small diameter and open at the top extends downwardly within tub-e 43 to below the I'openings 41 and serves to permit the discharge of any air or gases which might accumulate in the reservoir 10, if it should happen that same have not been discharged through the vent opening 29.

It is to be understood that the invention is not limited to the form shown rfor the purposes vof illustration but that modificainthe lowering of Itions and changes may-be resorted to, utilizing the principle of the invention and comraaaoss trolled by the height of the fuel within thev reservoir for positively l'iolding the pumplng means stationary, or substantially so.

2. In a fuel feeding apparatus, fuel pumping means adapted to be operated from a source of pulsating pressure, a reservoir for fuel pumped, a clutch adapted to hold said pumping means relatively stationary, or substantially so, and a float rising and falling with the rise and fall of fuel in the reservoir for controlling said clutch means.

3. In a fuel feeding apparatus, fuel pump'- ing means .adapted to be connected to and operated by the pulsating pressure of a cylinder of an internal combustion engine, a reservoir for fuel pumped, a clutch for holding the pumping means, and a float in the fuel reservoir for operating said clutch.

4. In fuel feeding apparatusl fuel pumping means comprising a piston adapted to be operated by the pulsating pressure of an internal combustion cylinder or cylinders, a reservoir for fuel pumped, a oat in said reservoir, a member connected to move with the piston and extending into said reservoir, and holding means to be applied to said member to hold said member and piston stationary or substantially so and adapted to be actuated by said float when it rises" with rise of fuel in the reservoir.

5. In a fuel feeding apparatus, a reser-` voir, a closure therefor having cylinders projecting into and out beyond ythe end of the reservoir respectively, a fuel pump in thel inner cylinderpiston in the outer cylinder direct connected to said fuel pump to move therewith, said piston being adapted to be actuated by the pulsating pressure of an internal combustion engine, bumpers in said cylinders for cushioningthe pumping mechanism against shocks, an air vent for said reservoir, a valve for the air vent, and spring means between for connecting said piston to said valve. y'

Intestimony that I claim the foregoing, I hereto set my hand, this 12 day of June,

HAROLD C. SUEKERT. 

